Implement C# MCP server with auth feature

.gitmodules

@@ -1,3 +1,4 @@
 [submodule "third_party/gopher-orch"]
 	path = third_party/gopher-orch
 	url = https://github.com/GopherSecurity/gopher-orch.git
+	branch = br_release

build.sh

@@ -97,7 +97,9 @@ cmake .. \
     -DCMAKE_BUILD_TYPE=Release \
     -DCMAKE_INSTALL_PREFIX="${SCRIPT_DIR}/native" \
     -DBUILD_SHARED_LIBS=ON \
-    -DCMAKE_POSITION_INDEPENDENT_CODE=ON
+    -DCMAKE_POSITION_INDEPENDENT_CODE=ON \
+    -DBUILD_EXAMPLES=OFF \
+    -DBUILD_TESTS=OFF
 
 # Build
 echo -e "${YELLOW}  Compiling...${NC}"
@@ -163,12 +165,30 @@ dotnet build -c Release
 echo -e "${GREEN}✓ C# SDK built successfully${NC}"
 echo ""
 
-# Step 5: Run tests
-echo -e "${YELLOW}Step 5: Running tests...${NC}"
-dotnet test -c Release --no-build 2>/dev/null && echo -e "${GREEN}✓ Tests passed${NC}" || echo -e "${YELLOW}⚠ Some tests may have failed (native library required)${NC}"
+# Step 5: Build Auth Example
+echo -e "${YELLOW}Step 5: Building Auth MCP Server example...${NC}"
+AUTH_EXAMPLE_DIR="${SCRIPT_DIR}/examples/auth"
+if [ -d "${AUTH_EXAMPLE_DIR}" ]; then
+    dotnet build "${AUTH_EXAMPLE_DIR}/AuthMcpServer/AuthMcpServer.csproj" -c Release
+    dotnet build "${AUTH_EXAMPLE_DIR}/AuthMcpServer.Tests/AuthMcpServer.Tests.csproj" -c Release
+    echo -e "${GREEN}✓ Auth example built successfully${NC}"
+else
+    echo -e "${YELLOW}⚠ Auth example not found at ${AUTH_EXAMPLE_DIR}${NC}"
+fi
+echo ""
+
+# Step 6: Run tests
+echo -e "${YELLOW}Step 6: Running tests...${NC}"
+dotnet test -c Release --no-build 2>/dev/null && echo -e "${GREEN}✓ SDK tests passed${NC}" || echo -e "${YELLOW}⚠ Some SDK tests may have failed (native library required)${NC}"
+
+# Run auth example tests
+if [ -d "${AUTH_EXAMPLE_DIR}" ]; then
+    echo -e "${YELLOW}  Running Auth example tests...${NC}"
+    dotnet test "${AUTH_EXAMPLE_DIR}/AuthMcpServer.Tests/AuthMcpServer.Tests.csproj" -c Release --no-build && echo -e "${GREEN}✓ Auth example tests passed${NC}" || echo -e "${YELLOW}⚠ Some Auth example tests failed${NC}"
+fi
 
 # Package NuGet
-echo -e "${YELLOW}Step 6: Packaging NuGet...${NC}"
+echo -e "${YELLOW}Step 7: Packaging NuGet...${NC}"
 dotnet pack -c Release --no-build -o "${SCRIPT_DIR}/packages"
 echo -e "${GREEN}✓ NuGet package created${NC}"
 
@@ -181,3 +201,4 @@ echo -e "Native libraries: ${YELLOW}${NATIVE_LIB_DIR}${NC}"
 echo -e "Native headers:   ${YELLOW}${NATIVE_INCLUDE_DIR}${NC}"
 echo -e "Run tests:        ${YELLOW}dotnet test${NC}"
 echo -e "Package NuGet:    ${YELLOW}dotnet pack${NC}"
+echo -e "Run Auth example: ${YELLOW}cd examples/auth && ./run_example.sh${NC}"

examples/auth/.gitignore

@@ -0,0 +1,66 @@
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio
+.vs/
+*.user
+*.userosscache
+*.sln.docstates
+*.suo
+*.cache
+
+# Visual Studio Code
+.vscode/
+
+# JetBrains Rider
+.idea/
+*.sln.iml
+
+# NuGet
+*.nupkg
+*.snupkg
+**/[Pp]ackages/*
+!**/[Pp]ackages/build/
+*.nuget.props
+*.nuget.targets
+
+# Project files
+*.csproj.user
+project.lock.json
+project.fragment.lock.json
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Test Results
+[Tt]est[Rr]esult*/
+*.trx
+*.coverage
+*.coveragexml
+[Cc]overage/
+coverage*.json
+coverage*.xml
+*.coverlet.json
+
+# Publish
+publish/
+
+# OS files
+.DS_Store
+Thumbs.db

examples/auth/AuthMcpServer.Tests/AuthMcpServer.Tests.csproj

@@ -0,0 +1,29 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.0" />
+    <PackageReference Include="FluentAssertions" Version="8.9.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="xunit" Version="2.5.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\AuthMcpServer\AuthMcpServer.csproj" />
+  </ItemGroup>
+
+</Project>